Spindle step-bearing.



PATENTED MAR. 19, 1907.

APPLICATION FILED DBO. 14. 1906.

I: U a C Q .L

INVENTOR BY 66 ATT N EY wiTNBssEs:

UNITED STATES PATENT OFFICE.

. THOMAS W. MORGAN, or WATERLOO, rowaassrcnon To WILBUR W.

- MARSH, or WATERLOO/IOWA.

SPINDLE STEP-BEARING.

Specification of Letters Patent.

Application fi led December 14,1906. Serial llo 347,789.

' To all whom it may concern:

tween without any dragging friction in their course. This object I have accomplished by the means which are hereinafter, described and claimed and which are illustrated in the accompanying drawing, which represents a vertical central axial section of my improved spindle step-bearing arranged and adapted toeffect the improvement hereinbefore alluded to.

The bearing-block g is seated within a hollow bushing d, whose periphery is tapered to fit a tapered opening in the frame 6. The

lower part of said bushing has an interior thread, within which works the adjustingscrew 7:, bywhich the bearing-block g is supported and adjusted. A hollow cylindrical plug 0 is fitted within the up er part of the opening in the bushing d an supported in such pcsition by means of a peripheral flange resting on the top edge of said bushing. The bearing-seat h in the bearing-blocl g has its lower bearing-surface inclined at a certain angle to the horizontal for a purpose to be hereinafter described. This bearing-seat it forms a raceway tor the antifrictionJ-baiisi,

the latter supporting the lower end of i spindle. The spindle c has a socket in lower end. tapering upwardly to form a for the removable bearing-point 5, whose body is of the form of a truncated cone; lower end of the bearing-point t has a down wardly-directed portion foi, a conical term. The conical point f is the portion of the bean ing-point b which contacts with the anti tion-halls i. The inside wall the bear1ngseat h is given the same angle as that of the conical end of the bearing-point .b, The most prefera le angle for this purpose is that of forty-five degrees; but any other angle can be used as desired.

When the spndlea is rapidly rotating, if it should oscillate the point f will always remain in contact with all the balls '5, since the conical bearing-seat it permits such balls to change their position therein without altering their relative position to'said bearingpoint. i The balls are thus always in bearing contact with such point, and the whole runs without frictional variation.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A spindle step-bearing, composed of the combination with a spindle having a conical bearing-point, of a conical bearing-seat whose angle to the axis is the same as that of the bearing-point, and antifriction-balls therebetween.

2. A spindle step-hearing, composed of the combination of a spindle, a removable bearing-point in said spindle having a conical bearing end, a conical bearing-seat of the same angle as the conical bearing end of said spindle, and antii'riction-balls therebetween.

3. spindle step-bearing, composed of the combination with a spindle having a conical bearing; point, of a vertically adgustable Patented March 19, 1907. I 7

conical bearingseat whose angle to the axis is the same as that of the bearing-point, and antiirictiomballs therebetween.

A spindle step-bearing, composed of the l of a spindle, a removable bearin said spindle havin a conical bearrtically-adjustab e conical bearthe same angle as. the conical of said spindle, and antii'rictiontwe n Sig cc a November, 19%.

THQMAS W. MRGAN.

c -9 Waterloo, lowa, this Zfith day or 

